Evaluasi Kesesuaian Data Tropical Rainfall Measuring Mission (TRMM) dengan Data Pos Hujan Pada Das Temef di Kabupaten Timor Tengah Selatan

Authors

  • Denik Sri Krisnayanti Civil Engineering Department Science and Engineering Faculty Nusa Cendana University, Indonesia http://orcid.org/0000-0003-1583-5118
  • Davianto Frangky B. Welkis Magister Student of Water Resources Engineering Department Brawijaya University, Indonesia
  • Fery Moun Hepy Pascasarjana Universitas Brawijaya Jl. MT Haryono 169, Malang Indonesia 65145, Indonesia
  • Djoko Legono Jl. Grafika No.2, Yogyakarta, Indonesia, Indonesia

DOI:

https://doi.org/10.32679/jsda.v16i1.646

Abstract

The construction of the Temef Dam in Oenino Village, Oenino District, and Konbaki Village, Polen District, South Central Timor Regency requires long and reliable rainfall data. To overcome the minimum data or the unavailability of automatic rainfall (ARR) and discharge data in the past decades, the use of Tropical Rainfall Measuring Mission (TRMM) satellite data is foreseen. The accuracy of TRMM data is obtained when the parameters of suitability and compatibility of TRMM are in a good agreement with the ARR. For the Temef watershed, there are six rainfall stations that were reviewed, namely Fatumnasi, Oeoh, Noelnoni, Polen, Nifukani, and Batinifukoko rainfall stations. Direct comparisons of rainfall data were conducted for 20 years (1998-2018) with temporal resolution on a monthly and daily basis. The results of the study show that the rainfall patterns in the TRMM data product (version 3B42V7) tend to be consistent with 3 rainfall stations in the Temef watershed namely Noelnoni, Fatumnasi, and Batinifukoko. A correlation coefficient of 0.505 – 0.813 was obtained from TRMM data calibration at monthly basis while a correction factor level of 0.0056 - 0.0129 was obtained for daily.  The calibration on the annual maximum daily rainfall data resulted in a correction factor of 0.0298 - 0.2516. Monthly and daily TRMM data fit well with the data of 3 rainfall stations. However, the Noelnoni rainfall station showed poor results on the annual maximum daily rainfall.

Keywords: TRMM data, ARR data, correction factor, correlation coefficient

Downloads

Published

2020-05-31

How to Cite

Krisnayanti, D. S., Welkis, D. F. B., Hepy, F. M., & Legono, D. (2020). Evaluasi Kesesuaian Data Tropical Rainfall Measuring Mission (TRMM) dengan Data Pos Hujan Pada Das Temef di Kabupaten Timor Tengah Selatan. JURNAL SUMBER DAYA AIR, 16(1), 51–62. https://doi.org/10.32679/jsda.v16i1.646

Issue

Vol. 16 No. 1 (2020)

Section

ISI

Citation Check

License

Authors who publish in Jurnal Sumber Daya Air agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).